MP3446U数据手册MPS中文资料规格书

描述 Description

The MP3446U is a high-efficiency, current-mode, synchronous boost controller with a wide 6V to 55V input voltage (VIN) range. It can operate at multiple phases for high-power applications. The MP3446U also has the capability to drive 10V MOSFETs, which greatly improves efficiency and minimizes power loss.

The MP3446U provides either an I2C interface or serial peripheral interface (SPI) to configure certain key operating parameters, such as the switching frequency (fSW), current limit, light-load mode, spread spectrum, dead time, soft-start time, and slope compensation. fSW can be adjusted from 250kHz to 2.5MHz or be directly synchronized to the external source.

The MP3446U also includes under-voltage lockout (UVLO), current limiting, and thermal shutdown protection.

The MP3446U is available in a QFN-21 (5mmx5mm) package.

特性 Features

• Configurable via the I2C Interface or Serial Peripheral Interface (SPI):
• Switching Frequency (fSW)
• Slope Compensation
• Current Limit Reference
• Light-Load Mode Selection
• Pulse-Skip Modulation (PSM) for Ultra-Light Loads
• Dead Time
• SYNCIN Phase and Frequency Division
• Synchronous or Non-Synchronous Operation
• Frequency Spread Spectrum (FSS)

• Additional Features:
• Wide 6V to 55V Input Voltage (VIN) Range
• Supports Interleaved Boost with 2-Phase Switching
• 10V Gate Driving Capability
• Switching Frequency Synchronization to External 250kHz to 2.5MHz
• Clock SYNC Out
• Thermal Warning and Thermal Shutdown
• Power Good (PG) Indicator
• Available in a QFN-21 (5mmx5mm) Package